Tartaric Acid
L-Tartaric Acid, D(-)-Tartaric Acid, DL-Tartaric Acid
- CAS
- 87-69-4
- EC
- 201-766-0
- Food Code
- E334
- Sectors
- Food & Nutrition, Pharma & Healthcare, Personal Care & Cosmetics
Tartaric Acid (CAS 87-69-4) is a naturally occurring organic acid found in grapes, supplied as a white crystalline powder with a sour taste, and it functions as an acidifier in beverages, wine and confectionery, as a pharmaceutical excipient and chelator, and as a pH adjuster in cosmetics. It has density 1.76 g/cm³, melting point 170-172°C, highly soluble in water (139 g/100mL), with sour taste; occurs naturally in grapes, exists as D-, L-, and meso- forms.
Typical Properties
| Molecular formula | C4H6O6 |
|---|---|
| Molecular weight | 150.09 g/mol |
| Appearance | white crystals |
| Form | Solid |
| Color | White or colorless |
| Odor | at 100.00 %. odorless |
| Melting point | 169 °C |
| Boiling point | 126.2 °C |
| Density | 1.76 g/cm³ (liquid) @ Temp: 25 °C |
| Water solubility | 1390 g/L (20 °C) |
| Flash point | 210 °C |
| pH | 1.6 (100g/l, H2O, 25°C) |
| GHS signal word | Danger · Corrosive, Irritant / harmful |
| HS code | 29181200 |
| Grades available | Food Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Tartaric Acid
Applications
Used as acidifier in beverages and food (e.g., wine, candies); in pharmaceuticals as excipient and chelator; in metal cleaning and polishing; in cosmetics for pH adjustment; and in dyeing as mordant.
Safety & Risks
Causes serious eye damage and skin irritation; avoid breathing dust or contact. Muscle toxin in high doses leading to paralysis; incompatible with bases or metals. Hazard Class 8; use protective gloves and eye protection.
Packaging
In 25kg bags or drums; store in tightly closed containers in cool, dry places.